1 /* 2 * Linux host USB redirector 3 * 4 * Copyright (c) 2005 Fabrice Bellard 5 * 6 * Copyright (c) 2008 Max Krasnyansky 7 * Support for host device auto connect & disconnect 8 * Major rewrite to support fully async operation 9 * 10 * Copyright 2008 TJ <linux@tjworld.net> 11 * Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition 12 * to the legacy /proc/bus/usb USB device discovery and handling 13 * 14 * (c) 2012 Gerd Hoffmann <kraxel@redhat.com> 15 * Completely rewritten to use libusb instead of usbfs ioctls. 16 * 17 * Permission is hereby granted, free of charge, to any person obtaining a copy 18 * of this software and associated documentation files (the "Software"), to deal 19 * in the Software without restriction, including without limitation the rights 20 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 21 * copies of the Software, and to permit persons to whom the Software is 22 * furnished to do so, subject to the following conditions: 23 * 24 * The above copyright notice and this permission notice shall be included in 25 * all copies or substantial portions of the Software. 26 * 27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 28 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 29 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 30 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 31 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 32 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 33 * THE SOFTWARE. 34 */ 35 36 #include <poll.h> 37 #include <libusb.h> 38 39 #include "qemu-common.h" 40 #include "monitor/monitor.h" 41 #include "sysemu/sysemu.h" 42 #include "trace.h" 43 44 #include "hw/usb.h" 45 46 /* ------------------------------------------------------------------------ */ 47 48 #define TYPE_USB_HOST_DEVICE "usb-host" 49 #define USB_HOST_DEVICE(obj) \ 50 OBJECT_CHECK(USBHostDevice, (obj), TYPE_USB_HOST_DEVICE) 51 52 typedef struct USBHostDevice USBHostDevice; 53 typedef struct USBHostRequest USBHostRequest; 54 typedef struct USBHostIsoXfer USBHostIsoXfer; 55 typedef struct USBHostIsoRing USBHostIsoRing; 56 57 struct USBAutoFilter { 58 uint32_t bus_num; 59 uint32_t addr; 60 char *port; 61 uint32_t vendor_id; 62 uint32_t product_id; 63 }; 64 65 enum USBHostDeviceOptions { 66 USB_HOST_OPT_PIPELINE, 67 }; 68 69 struct USBHostDevice { 70 USBDevice parent_obj; 71 72 /* properties */ 73 struct USBAutoFilter match; 74 int32_t bootindex; 75 uint32_t iso_urb_count; 76 uint32_t iso_urb_frames; 77 uint32_t options; 78 uint32_t loglevel; 79 80 /* state */ 81 QTAILQ_ENTRY(USBHostDevice) next; 82 int seen, errcount; 83 int bus_num; 84 int addr; 85 char port[16]; 86 87 libusb_device *dev; 88 libusb_device_handle *dh; 89 struct libusb_device_descriptor ddesc; 90 91 struct { 92 bool detached; 93 bool claimed; 94 } ifs[USB_MAX_INTERFACES]; 95 96 /* callbacks & friends */ 97 QEMUBH *bh_nodev; 98 QEMUBH *bh_postld; 99 Notifier exit; 100 101 /* request queues */ 102 QTAILQ_HEAD(, USBHostRequest) requests; 103 QTAILQ_HEAD(, USBHostIsoRing) isorings; 104 }; 105 106 struct USBHostRequest { 107 USBHostDevice *host; 108 USBPacket *p; 109 bool in; 110 struct libusb_transfer *xfer; 111 unsigned char *buffer; 112 unsigned char *cbuf; 113 unsigned int clen; 114 bool usb3ep0quirk; 115 QTAILQ_ENTRY(USBHostRequest) next; 116 }; 117 118 struct USBHostIsoXfer { 119 USBHostIsoRing *ring; 120 struct libusb_transfer *xfer; 121 bool copy_complete; 122 unsigned int packet; 123 QTAILQ_ENTRY(USBHostIsoXfer) next; 124 }; 125 126 struct USBHostIsoRing { 127 USBHostDevice *host; 128 USBEndpoint *ep; 129 QTAILQ_HEAD(, USBHostIsoXfer) unused; 130 QTAILQ_HEAD(, USBHostIsoXfer) inflight; 131 QTAILQ_HEAD(, USBHostIsoXfer) copy; 132 QTAILQ_ENTRY(USBHostIsoRing) next; 133 }; 134 135 static QTAILQ_HEAD(, USBHostDevice) hostdevs = 136 QTAILQ_HEAD_INITIALIZER(hostdevs); 137 138 static void usb_host_auto_check(void *unused); 139 static void usb_host_release_interfaces(USBHostDevice *s); 140 static void usb_host_nodev(USBHostDevice *s); 141 static void usb_host_detach_kernel(USBHostDevice *s); 142 static void usb_host_attach_kernel(USBHostDevice *s); 143 144 /* ------------------------------------------------------------------------ */ 145 146 #ifndef LIBUSB_LOG_LEVEL_WARNING /* older libusb didn't define these */ 147 #define LIBUSB_LOG_LEVEL_WARNING 2 148 #endif 149 150 /* ------------------------------------------------------------------------ */ 151 152 #define CONTROL_TIMEOUT 10000 /* 10 sec */ 153 #define BULK_TIMEOUT 0 /* unlimited */ 154 #define INTR_TIMEOUT 0 /* unlimited */ 155 156 #if LIBUSBX_API_VERSION >= 0x01000103 157 # define HAVE_STREAMS 1 158 #endif 159 160 static const char *speed_name[] = { 161 [LIBUSB_SPEED_UNKNOWN] = "?", 162 [LIBUSB_SPEED_LOW] = "1.5", 163 [LIBUSB_SPEED_FULL] = "12", 164 [LIBUSB_SPEED_HIGH] = "480", 165 [LIBUSB_SPEED_SUPER] = "5000", 166 }; 167 168 static const unsigned int speed_map[] = { 169 [LIBUSB_SPEED_LOW] = USB_SPEED_LOW, 170 [LIBUSB_SPEED_FULL] = USB_SPEED_FULL, 171 [LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH, 172 [LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER, 173 }; 174 175 static const unsigned int status_map[] = { 176 [LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS, 177 [LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR, 178 [LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR, 179 [LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR, 180 [LIBUSB_TRANSFER_STALL] = USB_RET_STALL, 181 [LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV, 182 [LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE, 183 }; 184 185 static const char *err_names[] = { 186 [-LIBUSB_ERROR_IO] = "IO", 187 [-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM", 188 [-LIBUSB_ERROR_ACCESS] = "ACCESS", 189 [-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE", 190 [-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND", 191 [-LIBUSB_ERROR_BUSY] = "BUSY", 192 [-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT", 193 [-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW", 194 [-LIBUSB_ERROR_PIPE] = "PIPE", 195 [-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED", 196 [-LIBUSB_ERROR_NO_MEM] = "NO_MEM", 197 [-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED", 198 [-LIBUSB_ERROR_OTHER] = "OTHER", 199 }; 200 201 static libusb_context *ctx; 202 static uint32_t loglevel; 203 204 static void usb_host_handle_fd(void *opaque) 205 { 206 struct timeval tv = { 0, 0 }; 207 libusb_handle_events_timeout(ctx, &tv); 208 } 209 210 static void usb_host_add_fd(int fd, short events, void *user_data) 211 { 212 qemu_set_fd_handler(fd, 213 (events & POLLIN) ? usb_host_handle_fd : NULL, 214 (events & POLLOUT) ? usb_host_handle_fd : NULL, 215 ctx); 216 } 217 218 static void usb_host_del_fd(int fd, void *user_data) 219 { 220 qemu_set_fd_handler(fd, NULL, NULL, NULL); 221 } 222 223 static int usb_host_init(void) 224 { 225 const struct libusb_pollfd **poll; 226 int i, rc; 227 228 if (ctx) { 229 return 0; 230 } 231 rc = libusb_init(&ctx); 232 if (rc != 0) { 233 return -1; 234 } 235 libusb_set_debug(ctx, loglevel); 236 237 libusb_set_pollfd_notifiers(ctx, usb_host_add_fd, 238 usb_host_del_fd, 239 ctx); 240 poll = libusb_get_pollfds(ctx); 241 if (poll) { 242 for (i = 0; poll[i] != NULL; i++) { 243 usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx); 244 } 245 } 246 free(poll); 247 return 0; 248 } 249 250 static int usb_host_get_port(libusb_device *dev, char *port, size_t len) 251 { 252 uint8_t path[7]; 253 size_t off; 254 int rc, i; 255 256 #if LIBUSBX_API_VERSION >= 0x01000102 257 rc = libusb_get_port_numbers(dev, path, 7); 258 #else 259 rc = libusb_get_port_path(ctx, dev, path, 7); 260 #endif 261 if (rc < 0) { 262 return 0; 263 } 264 off = snprintf(port, len, "%d", path[0]); 265 for (i = 1; i < rc; i++) { 266 off += snprintf(port+off, len-off, ".%d", path[i]); 267 } 268 return off; 269 } 270 271 static void usb_host_libusb_error(const char *func, int rc) 272 { 273 const char *errname; 274 275 if (rc >= 0) { 276 return; 277 } 278 279 if (-rc < ARRAY_SIZE(err_names) && err_names[-rc]) { 280 errname = err_names[-rc]; 281 } else { 282 errname = "?"; 283 } 284 error_report("%s: %d [%s]", func, rc, errname); 285 } 286 287 /* ------------------------------------------------------------------------ */ 288 289 static bool usb_host_use_combining(USBEndpoint *ep) 290 { 291 int type; 292 293 if (!ep->pipeline) { 294 return false; 295 } 296 if (ep->pid != USB_TOKEN_IN) { 297 return false; 298 } 299 type = usb_ep_get_type(ep->dev, ep->pid, ep->nr); 300 if (type != USB_ENDPOINT_XFER_BULK) { 301 return false; 302 } 303 return true; 304 } 305 306 /* ------------------------------------------------------------------------ */ 307 308 static USBHostRequest *usb_host_req_alloc(USBHostDevice *s, USBPacket *p, 309 bool in, size_t bufsize) 310 { 311 USBHostRequest *r = g_new0(USBHostRequest, 1); 312 313 r->host = s; 314 r->p = p; 315 r->in = in; 316 r->xfer = libusb_alloc_transfer(0); 317 if (bufsize) { 318 r->buffer = g_malloc(bufsize); 319 } 320 QTAILQ_INSERT_TAIL(&s->requests, r, next); 321 return r; 322 } 323 324 static void usb_host_req_free(USBHostRequest *r) 325 { 326 if (r->host) { 327 QTAILQ_REMOVE(&r->host->requests, r, next); 328 } 329 libusb_free_transfer(r->xfer); 330 g_free(r->buffer); 331 g_free(r); 332 } 333 334 static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p) 335 { 336 USBHostRequest *r; 337 338 QTAILQ_FOREACH(r, &s->requests, next) { 339 if (r->p == p) { 340 return r; 341 } 342 } 343 return NULL; 344 } 345 346 static void usb_host_req_complete_ctrl(struct libusb_transfer *xfer) 347 { 348 USBHostRequest *r = xfer->user_data; 349 USBHostDevice *s = r->host; 350 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE); 351 352 if (r->p == NULL) { 353 goto out; /* request was canceled */ 354 } 355 356 r->p->status = status_map[xfer->status]; 357 r->p->actual_length = xfer->actual_length; 358 if (r->in && xfer->actual_length) { 359 memcpy(r->cbuf, r->buffer + 8, xfer->actual_length); 360 361 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices 362 * to work redirected to a not superspeed capable hcd */ 363 if (r->usb3ep0quirk && xfer->actual_length >= 18 && 364 r->cbuf[7] == 9) { 365 r->cbuf[7] = 64; 366 } 367 } 368 trace_usb_host_req_complete(s->bus_num, s->addr, r->p, 369 r->p->status, r->p->actual_length); 370 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p); 371 372 out: 373 usb_host_req_free(r); 374 if (disconnect) { 375 usb_host_nodev(s); 376 } 377 } 378 379 static void usb_host_req_complete_data(struct libusb_transfer *xfer) 380 { 381 USBHostRequest *r = xfer->user_data; 382 USBHostDevice *s = r->host; 383 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE); 384 385 if (r->p == NULL) { 386 goto out; /* request was canceled */ 387 } 388 389 r->p->status = status_map[xfer->status]; 390 if (r->in && xfer->actual_length) { 391 usb_packet_copy(r->p, r->buffer, xfer->actual_length); 392 } 393 trace_usb_host_req_complete(s->bus_num, s->addr, r->p, 394 r->p->status, r->p->actual_length); 395 if (usb_host_use_combining(r->p->ep)) { 396 usb_combined_input_packet_complete(USB_DEVICE(s), r->p); 397 } else { 398 usb_packet_complete(USB_DEVICE(s), r->p); 399 } 400 401 out: 402 usb_host_req_free(r); 403 if (disconnect) { 404 usb_host_nodev(s); 405 } 406 } 407 408 static void usb_host_req_abort(USBHostRequest *r) 409 { 410 USBHostDevice *s = r->host; 411 bool inflight = (r->p && r->p->state == USB_PACKET_ASYNC); 412 413 if (inflight) { 414 r->p->status = USB_RET_NODEV; 415 trace_usb_host_req_complete(s->bus_num, s->addr, r->p, 416 r->p->status, r->p->actual_length); 417 if (r->p->ep->nr == 0) { 418 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p); 419 } else { 420 usb_packet_complete(USB_DEVICE(s), r->p); 421 } 422 r->p = NULL; 423 } 424 425 QTAILQ_REMOVE(&r->host->requests, r, next); 426 r->host = NULL; 427 428 if (inflight) { 429 libusb_cancel_transfer(r->xfer); 430 } 431 } 432 433 /* ------------------------------------------------------------------------ */ 434 435 static void usb_host_req_complete_iso(struct libusb_transfer *transfer) 436 { 437 USBHostIsoXfer *xfer = transfer->user_data; 438 439 if (!xfer) { 440 /* USBHostIsoXfer released while inflight */ 441 g_free(transfer->buffer); 442 libusb_free_transfer(transfer); 443 return; 444 } 445 446 QTAILQ_REMOVE(&xfer->ring->inflight, xfer, next); 447 if (QTAILQ_EMPTY(&xfer->ring->inflight)) { 448 USBHostDevice *s = xfer->ring->host; 449 trace_usb_host_iso_stop(s->bus_num, s->addr, xfer->ring->ep->nr); 450 } 451 if (xfer->ring->ep->pid == USB_TOKEN_IN) { 452 QTAILQ_INSERT_TAIL(&xfer->ring->copy, xfer, next); 453 } else { 454 QTAILQ_INSERT_TAIL(&xfer->ring->unused, xfer, next); 455 } 456 } 457 458 static USBHostIsoRing *usb_host_iso_alloc(USBHostDevice *s, USBEndpoint *ep) 459 { 460 USBHostIsoRing *ring = g_new0(USBHostIsoRing, 1); 461 USBHostIsoXfer *xfer; 462 /* FIXME: check interval (for now assume one xfer per frame) */ 463 int packets = s->iso_urb_frames; 464 int i; 465 466 ring->host = s; 467 ring->ep = ep; 468 QTAILQ_INIT(&ring->unused); 469 QTAILQ_INIT(&ring->inflight); 470 QTAILQ_INIT(&ring->copy); 471 QTAILQ_INSERT_TAIL(&s->isorings, ring, next); 472 473 for (i = 0; i < s->iso_urb_count; i++) { 474 xfer = g_new0(USBHostIsoXfer, 1); 475 xfer->ring = ring; 476 xfer->xfer = libusb_alloc_transfer(packets); 477 xfer->xfer->dev_handle = s->dh; 478 xfer->xfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS; 479 480 xfer->xfer->endpoint = ring->ep->nr; 481 if (ring->ep->pid == USB_TOKEN_IN) { 482 xfer->xfer->endpoint |= USB_DIR_IN; 483 } 484 xfer->xfer->callback = usb_host_req_complete_iso; 485 xfer->xfer->user_data = xfer; 486 487 xfer->xfer->num_iso_packets = packets; 488 xfer->xfer->length = ring->ep->max_packet_size * packets; 489 xfer->xfer->buffer = g_malloc0(xfer->xfer->length); 490 491 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 492 } 493 494 return ring; 495 } 496 497 static USBHostIsoRing *usb_host_iso_find(USBHostDevice *s, USBEndpoint *ep) 498 { 499 USBHostIsoRing *ring; 500 501 QTAILQ_FOREACH(ring, &s->isorings, next) { 502 if (ring->ep == ep) { 503 return ring; 504 } 505 } 506 return NULL; 507 } 508 509 static void usb_host_iso_reset_xfer(USBHostIsoXfer *xfer) 510 { 511 libusb_set_iso_packet_lengths(xfer->xfer, 512 xfer->ring->ep->max_packet_size); 513 xfer->packet = 0; 514 xfer->copy_complete = false; 515 } 516 517 static void usb_host_iso_free_xfer(USBHostIsoXfer *xfer, bool inflight) 518 { 519 if (inflight) { 520 xfer->xfer->user_data = NULL; 521 } else { 522 g_free(xfer->xfer->buffer); 523 libusb_free_transfer(xfer->xfer); 524 } 525 g_free(xfer); 526 } 527 528 static void usb_host_iso_free(USBHostIsoRing *ring) 529 { 530 USBHostIsoXfer *xfer; 531 532 while ((xfer = QTAILQ_FIRST(&ring->inflight)) != NULL) { 533 QTAILQ_REMOVE(&ring->inflight, xfer, next); 534 usb_host_iso_free_xfer(xfer, true); 535 } 536 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) { 537 QTAILQ_REMOVE(&ring->unused, xfer, next); 538 usb_host_iso_free_xfer(xfer, false); 539 } 540 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL) { 541 QTAILQ_REMOVE(&ring->copy, xfer, next); 542 usb_host_iso_free_xfer(xfer, false); 543 } 544 545 QTAILQ_REMOVE(&ring->host->isorings, ring, next); 546 g_free(ring); 547 } 548 549 static void usb_host_iso_free_all(USBHostDevice *s) 550 { 551 USBHostIsoRing *ring; 552 553 while ((ring = QTAILQ_FIRST(&s->isorings)) != NULL) { 554 usb_host_iso_free(ring); 555 } 556 } 557 558 static bool usb_host_iso_data_copy(USBHostIsoXfer *xfer, USBPacket *p) 559 { 560 unsigned int psize; 561 unsigned char *buf; 562 563 buf = libusb_get_iso_packet_buffer_simple(xfer->xfer, xfer->packet); 564 if (p->pid == USB_TOKEN_OUT) { 565 psize = p->iov.size; 566 if (psize > xfer->ring->ep->max_packet_size) { 567 /* should not happen (guest bug) */ 568 psize = xfer->ring->ep->max_packet_size; 569 } 570 xfer->xfer->iso_packet_desc[xfer->packet].length = psize; 571 } else { 572 psize = xfer->xfer->iso_packet_desc[xfer->packet].actual_length; 573 if (psize > p->iov.size) { 574 /* should not happen (guest bug) */ 575 psize = p->iov.size; 576 } 577 } 578 usb_packet_copy(p, buf, psize); 579 xfer->packet++; 580 xfer->copy_complete = (xfer->packet == xfer->xfer->num_iso_packets); 581 return xfer->copy_complete; 582 } 583 584 static void usb_host_iso_data_in(USBHostDevice *s, USBPacket *p) 585 { 586 USBHostIsoRing *ring; 587 USBHostIsoXfer *xfer; 588 bool disconnect = false; 589 int rc; 590 591 ring = usb_host_iso_find(s, p->ep); 592 if (ring == NULL) { 593 ring = usb_host_iso_alloc(s, p->ep); 594 } 595 596 /* copy data to guest */ 597 xfer = QTAILQ_FIRST(&ring->copy); 598 if (xfer != NULL) { 599 if (usb_host_iso_data_copy(xfer, p)) { 600 QTAILQ_REMOVE(&ring->copy, xfer, next); 601 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 602 } 603 } 604 605 /* submit empty bufs to host */ 606 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) { 607 QTAILQ_REMOVE(&ring->unused, xfer, next); 608 usb_host_iso_reset_xfer(xfer); 609 rc = libusb_submit_transfer(xfer->xfer); 610 if (rc != 0) { 611 usb_host_libusb_error("libusb_submit_transfer [iso]", rc); 612 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 613 if (rc == LIBUSB_ERROR_NO_DEVICE) { 614 disconnect = true; 615 } 616 break; 617 } 618 if (QTAILQ_EMPTY(&ring->inflight)) { 619 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr); 620 } 621 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next); 622 } 623 624 if (disconnect) { 625 usb_host_nodev(s); 626 } 627 } 628 629 static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p) 630 { 631 USBHostIsoRing *ring; 632 USBHostIsoXfer *xfer; 633 bool disconnect = false; 634 int rc, filled = 0; 635 636 ring = usb_host_iso_find(s, p->ep); 637 if (ring == NULL) { 638 ring = usb_host_iso_alloc(s, p->ep); 639 } 640 641 /* copy data from guest */ 642 xfer = QTAILQ_FIRST(&ring->copy); 643 while (xfer != NULL && xfer->copy_complete) { 644 filled++; 645 xfer = QTAILQ_NEXT(xfer, next); 646 } 647 if (xfer == NULL) { 648 xfer = QTAILQ_FIRST(&ring->unused); 649 if (xfer == NULL) { 650 trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, p->ep->nr); 651 return; 652 } 653 QTAILQ_REMOVE(&ring->unused, xfer, next); 654 usb_host_iso_reset_xfer(xfer); 655 QTAILQ_INSERT_TAIL(&ring->copy, xfer, next); 656 } 657 usb_host_iso_data_copy(xfer, p); 658 659 if (QTAILQ_EMPTY(&ring->inflight)) { 660 /* wait until half of our buffers are filled 661 before kicking the iso out stream */ 662 if (filled*2 < s->iso_urb_count) { 663 return; 664 } 665 } 666 667 /* submit filled bufs to host */ 668 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL && 669 xfer->copy_complete) { 670 QTAILQ_REMOVE(&ring->copy, xfer, next); 671 rc = libusb_submit_transfer(xfer->xfer); 672 if (rc != 0) { 673 usb_host_libusb_error("libusb_submit_transfer [iso]", rc); 674 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 675 if (rc == LIBUSB_ERROR_NO_DEVICE) { 676 disconnect = true; 677 } 678 break; 679 } 680 if (QTAILQ_EMPTY(&ring->inflight)) { 681 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr); 682 } 683 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next); 684 } 685 686 if (disconnect) { 687 usb_host_nodev(s); 688 } 689 } 690 691 /* ------------------------------------------------------------------------ */ 692 693 static void usb_host_speed_compat(USBHostDevice *s) 694 { 695 USBDevice *udev = USB_DEVICE(s); 696 struct libusb_config_descriptor *conf; 697 const struct libusb_interface_descriptor *intf; 698 const struct libusb_endpoint_descriptor *endp; 699 #ifdef HAVE_STREAMS 700 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp; 701 #endif 702 bool compat_high = true; 703 bool compat_full = true; 704 uint8_t type; 705 int rc, c, i, a, e; 706 707 for (c = 0;; c++) { 708 rc = libusb_get_config_descriptor(s->dev, c, &conf); 709 if (rc != 0) { 710 break; 711 } 712 for (i = 0; i < conf->bNumInterfaces; i++) { 713 for (a = 0; a < conf->interface[i].num_altsetting; a++) { 714 intf = &conf->interface[i].altsetting[a]; 715 for (e = 0; e < intf->bNumEndpoints; e++) { 716 endp = &intf->endpoint[e]; 717 type = endp->bmAttributes & 0x3; 718 switch (type) { 719 case 0x01: /* ISO */ 720 compat_full = false; 721 compat_high = false; 722 break; 723 case 0x02: /* BULK */ 724 #ifdef HAVE_STREAMS 725 rc = libusb_get_ss_endpoint_companion_descriptor 726 (ctx, endp, &endp_ss_comp); 727 if (rc == LIBUSB_SUCCESS) { 728 libusb_free_ss_endpoint_companion_descriptor 729 (endp_ss_comp); 730 compat_full = false; 731 compat_high = false; 732 } 733 #endif 734 break; 735 case 0x03: /* INTERRUPT */ 736 if (endp->wMaxPacketSize > 64) { 737 compat_full = false; 738 } 739 if (endp->wMaxPacketSize > 1024) { 740 compat_high = false; 741 } 742 break; 743 } 744 } 745 } 746 } 747 libusb_free_config_descriptor(conf); 748 } 749 750 udev->speedmask = (1 << udev->speed); 751 if (udev->speed == USB_SPEED_SUPER && compat_high) { 752 udev->speedmask |= USB_SPEED_MASK_HIGH; 753 } 754 if (udev->speed == USB_SPEED_SUPER && compat_full) { 755 udev->speedmask |= USB_SPEED_MASK_FULL; 756 } 757 if (udev->speed == USB_SPEED_HIGH && compat_full) { 758 udev->speedmask |= USB_SPEED_MASK_FULL; 759 } 760 } 761 762 static void usb_host_ep_update(USBHostDevice *s) 763 { 764 static const char *tname[] = { 765 [USB_ENDPOINT_XFER_CONTROL] = "control", 766 [USB_ENDPOINT_XFER_ISOC] = "isoc", 767 [USB_ENDPOINT_XFER_BULK] = "bulk", 768 [USB_ENDPOINT_XFER_INT] = "int", 769 }; 770 USBDevice *udev = USB_DEVICE(s); 771 struct libusb_config_descriptor *conf; 772 const struct libusb_interface_descriptor *intf; 773 const struct libusb_endpoint_descriptor *endp; 774 #ifdef HAVE_STREAMS 775 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp; 776 #endif 777 uint8_t devep, type; 778 int pid, ep; 779 int rc, i, e; 780 781 usb_ep_reset(udev); 782 rc = libusb_get_active_config_descriptor(s->dev, &conf); 783 if (rc != 0) { 784 return; 785 } 786 trace_usb_host_parse_config(s->bus_num, s->addr, 787 conf->bConfigurationValue, true); 788 789 for (i = 0; i < conf->bNumInterfaces; i++) { 790 assert(udev->altsetting[i] < conf->interface[i].num_altsetting); 791 intf = &conf->interface[i].altsetting[udev->altsetting[i]]; 792 trace_usb_host_parse_interface(s->bus_num, s->addr, 793 intf->bInterfaceNumber, 794 intf->bAlternateSetting, true); 795 for (e = 0; e < intf->bNumEndpoints; e++) { 796 endp = &intf->endpoint[e]; 797 798 devep = endp->bEndpointAddress; 799 pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT; 800 ep = devep & 0xf; 801 type = endp->bmAttributes & 0x3; 802 803 if (ep == 0) { 804 trace_usb_host_parse_error(s->bus_num, s->addr, 805 "invalid endpoint address"); 806 return; 807 } 808 if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) { 809 trace_usb_host_parse_error(s->bus_num, s->addr, 810 "duplicate endpoint address"); 811 return; 812 } 813 814 trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep, 815 (devep & USB_DIR_IN) ? "in" : "out", 816 tname[type], true); 817 usb_ep_set_max_packet_size(udev, pid, ep, 818 endp->wMaxPacketSize); 819 usb_ep_set_type(udev, pid, ep, type); 820 usb_ep_set_ifnum(udev, pid, ep, i); 821 usb_ep_set_halted(udev, pid, ep, 0); 822 #ifdef HAVE_STREAMS 823 if (type == LIBUSB_TRANSFER_TYPE_BULK && 824 libusb_get_ss_endpoint_companion_descriptor(ctx, endp, 825 &endp_ss_comp) == LIBUSB_SUCCESS) { 826 usb_ep_set_max_streams(udev, pid, ep, 827 endp_ss_comp->bmAttributes); 828 libusb_free_ss_endpoint_companion_descriptor(endp_ss_comp); 829 } 830 #endif 831 } 832 } 833 834 libusb_free_config_descriptor(conf); 835 } 836 837 static int usb_host_open(USBHostDevice *s, libusb_device *dev) 838 { 839 USBDevice *udev = USB_DEVICE(s); 840 int bus_num = libusb_get_bus_number(dev); 841 int addr = libusb_get_device_address(dev); 842 int rc; 843 Error *local_err = NULL; 844 845 trace_usb_host_open_started(bus_num, addr); 846 847 if (s->dh != NULL) { 848 goto fail; 849 } 850 rc = libusb_open(dev, &s->dh); 851 if (rc != 0) { 852 goto fail; 853 } 854 855 s->dev = dev; 856 s->bus_num = bus_num; 857 s->addr = addr; 858 859 usb_host_detach_kernel(s); 860 861 libusb_get_device_descriptor(dev, &s->ddesc); 862 usb_host_get_port(s->dev, s->port, sizeof(s->port)); 863 864 usb_ep_init(udev); 865 usb_host_ep_update(s); 866 867 udev->speed = speed_map[libusb_get_device_speed(dev)]; 868 usb_host_speed_compat(s); 869 870 if (s->ddesc.iProduct) { 871 libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct, 872 (unsigned char *)udev->product_desc, 873 sizeof(udev->product_desc)); 874 } else { 875 snprintf(udev->product_desc, sizeof(udev->product_desc), 876 "host:%d.%d", bus_num, addr); 877 } 878 879 usb_device_attach(udev, &local_err); 880 if (local_err) { 881 error_report("%s", error_get_pretty(local_err)); 882 error_free(local_err); 883 goto fail; 884 } 885 886 trace_usb_host_open_success(bus_num, addr); 887 return 0; 888 889 fail: 890 trace_usb_host_open_failure(bus_num, addr); 891 if (s->dh != NULL) { 892 libusb_close(s->dh); 893 s->dh = NULL; 894 s->dev = NULL; 895 } 896 return -1; 897 } 898 899 static void usb_host_abort_xfers(USBHostDevice *s) 900 { 901 USBHostRequest *r, *rtmp; 902 903 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) { 904 usb_host_req_abort(r); 905 } 906 } 907 908 static int usb_host_close(USBHostDevice *s) 909 { 910 USBDevice *udev = USB_DEVICE(s); 911 912 if (s->dh == NULL) { 913 return -1; 914 } 915 916 trace_usb_host_close(s->bus_num, s->addr); 917 918 usb_host_abort_xfers(s); 919 usb_host_iso_free_all(s); 920 921 if (udev->attached) { 922 usb_device_detach(udev); 923 } 924 925 usb_host_release_interfaces(s); 926 libusb_reset_device(s->dh); 927 usb_host_attach_kernel(s); 928 libusb_close(s->dh); 929 s->dh = NULL; 930 s->dev = NULL; 931 932 usb_host_auto_check(NULL); 933 return 0; 934 } 935 936 static void usb_host_nodev_bh(void *opaque) 937 { 938 USBHostDevice *s = opaque; 939 usb_host_close(s); 940 } 941 942 static void usb_host_nodev(USBHostDevice *s) 943 { 944 if (!s->bh_nodev) { 945 s->bh_nodev = qemu_bh_new(usb_host_nodev_bh, s); 946 } 947 qemu_bh_schedule(s->bh_nodev); 948 } 949 950 static void usb_host_exit_notifier(struct Notifier *n, void *data) 951 { 952 USBHostDevice *s = container_of(n, USBHostDevice, exit); 953 954 if (s->dh) { 955 usb_host_release_interfaces(s); 956 usb_host_attach_kernel(s); 957 } 958 } 959 960 static void usb_host_realize(USBDevice *udev, Error **errp) 961 { 962 USBHostDevice *s = USB_HOST_DEVICE(udev); 963 964 if (s->match.vendor_id > 0xffff) { 965 error_setg(errp, "vendorid out of range"); 966 return; 967 } 968 if (s->match.product_id > 0xffff) { 969 error_setg(errp, "productid out of range"); 970 return; 971 } 972 if (s->match.addr > 127) { 973 error_setg(errp, "hostaddr out of range"); 974 return; 975 } 976 977 loglevel = s->loglevel; 978 udev->flags |= (1 << USB_DEV_FLAG_IS_HOST); 979 udev->auto_attach = 0; 980 QTAILQ_INIT(&s->requests); 981 QTAILQ_INIT(&s->isorings); 982 983 s->exit.notify = usb_host_exit_notifier; 984 qemu_add_exit_notifier(&s->exit); 985 986 QTAILQ_INSERT_TAIL(&hostdevs, s, next); 987 usb_host_auto_check(NULL); 988 } 989 990 static void usb_host_instance_init(Object *obj) 991 { 992 USBDevice *udev = USB_DEVICE(obj); 993 USBHostDevice *s = USB_HOST_DEVICE(udev); 994 995 device_add_bootindex_property(obj, &s->bootindex, 996 "bootindex", NULL, 997 &udev->qdev, NULL); 998 } 999 1000 static void usb_host_handle_destroy(USBDevice *udev) 1001 { 1002 USBHostDevice *s = USB_HOST_DEVICE(udev); 1003 1004 qemu_remove_exit_notifier(&s->exit); 1005 QTAILQ_REMOVE(&hostdevs, s, next); 1006 usb_host_close(s); 1007 } 1008 1009 static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p) 1010 { 1011 USBHostDevice *s = USB_HOST_DEVICE(udev); 1012 USBHostRequest *r; 1013 1014 if (p->combined) { 1015 usb_combined_packet_cancel(udev, p); 1016 return; 1017 } 1018 1019 trace_usb_host_req_canceled(s->bus_num, s->addr, p); 1020 1021 r = usb_host_req_find(s, p); 1022 if (r && r->p) { 1023 r->p = NULL; /* mark as dead */ 1024 libusb_cancel_transfer(r->xfer); 1025 } 1026 } 1027 1028 static void usb_host_detach_kernel(USBHostDevice *s) 1029 { 1030 struct libusb_config_descriptor *conf; 1031 int rc, i; 1032 1033 rc = libusb_get_active_config_descriptor(s->dev, &conf); 1034 if (rc != 0) { 1035 return; 1036 } 1037 for (i = 0; i < conf->bNumInterfaces; i++) { 1038 rc = libusb_kernel_driver_active(s->dh, i); 1039 usb_host_libusb_error("libusb_kernel_driver_active", rc); 1040 if (rc != 1) { 1041 continue; 1042 } 1043 trace_usb_host_detach_kernel(s->bus_num, s->addr, i); 1044 rc = libusb_detach_kernel_driver(s->dh, i); 1045 usb_host_libusb_error("libusb_detach_kernel_driver", rc); 1046 s->ifs[i].detached = true; 1047 } 1048 libusb_free_config_descriptor(conf); 1049 } 1050 1051 static void usb_host_attach_kernel(USBHostDevice *s) 1052 { 1053 struct libusb_config_descriptor *conf; 1054 int rc, i; 1055 1056 rc = libusb_get_active_config_descriptor(s->dev, &conf); 1057 if (rc != 0) { 1058 return; 1059 } 1060 for (i = 0; i < conf->bNumInterfaces; i++) { 1061 if (!s->ifs[i].detached) { 1062 continue; 1063 } 1064 trace_usb_host_attach_kernel(s->bus_num, s->addr, i); 1065 libusb_attach_kernel_driver(s->dh, i); 1066 s->ifs[i].detached = false; 1067 } 1068 libusb_free_config_descriptor(conf); 1069 } 1070 1071 static int usb_host_claim_interfaces(USBHostDevice *s, int configuration) 1072 { 1073 USBDevice *udev = USB_DEVICE(s); 1074 struct libusb_config_descriptor *conf; 1075 int rc, i; 1076 1077 for (i = 0; i < USB_MAX_INTERFACES; i++) { 1078 udev->altsetting[i] = 0; 1079 } 1080 udev->ninterfaces = 0; 1081 udev->configuration = 0; 1082 1083 usb_host_detach_kernel(s); 1084 1085 rc = libusb_get_active_config_descriptor(s->dev, &conf); 1086 if (rc != 0) { 1087 if (rc == LIBUSB_ERROR_NOT_FOUND) { 1088 /* address state - ignore */ 1089 return USB_RET_SUCCESS; 1090 } 1091 return USB_RET_STALL; 1092 } 1093 1094 for (i = 0; i < conf->bNumInterfaces; i++) { 1095 trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i); 1096 rc = libusb_claim_interface(s->dh, i); 1097 usb_host_libusb_error("libusb_claim_interface", rc); 1098 if (rc != 0) { 1099 return USB_RET_STALL; 1100 } 1101 s->ifs[i].claimed = true; 1102 } 1103 1104 udev->ninterfaces = conf->bNumInterfaces; 1105 udev->configuration = configuration; 1106 1107 libusb_free_config_descriptor(conf); 1108 return USB_RET_SUCCESS; 1109 } 1110 1111 static void usb_host_release_interfaces(USBHostDevice *s) 1112 { 1113 USBDevice *udev = USB_DEVICE(s); 1114 int i, rc; 1115 1116 for (i = 0; i < udev->ninterfaces; i++) { 1117 if (!s->ifs[i].claimed) { 1118 continue; 1119 } 1120 trace_usb_host_release_interface(s->bus_num, s->addr, i); 1121 rc = libusb_release_interface(s->dh, i); 1122 usb_host_libusb_error("libusb_release_interface", rc); 1123 s->ifs[i].claimed = false; 1124 } 1125 } 1126 1127 static void usb_host_set_address(USBHostDevice *s, int addr) 1128 { 1129 USBDevice *udev = USB_DEVICE(s); 1130 1131 trace_usb_host_set_address(s->bus_num, s->addr, addr); 1132 udev->addr = addr; 1133 } 1134 1135 static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p) 1136 { 1137 int rc; 1138 1139 trace_usb_host_set_config(s->bus_num, s->addr, config); 1140 1141 usb_host_release_interfaces(s); 1142 rc = libusb_set_configuration(s->dh, config); 1143 if (rc != 0) { 1144 usb_host_libusb_error("libusb_set_configuration", rc); 1145 p->status = USB_RET_STALL; 1146 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1147 usb_host_nodev(s); 1148 } 1149 return; 1150 } 1151 p->status = usb_host_claim_interfaces(s, config); 1152 if (p->status != USB_RET_SUCCESS) { 1153 return; 1154 } 1155 usb_host_ep_update(s); 1156 } 1157 1158 static void usb_host_set_interface(USBHostDevice *s, int iface, int alt, 1159 USBPacket *p) 1160 { 1161 USBDevice *udev = USB_DEVICE(s); 1162 int rc; 1163 1164 trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt); 1165 1166 usb_host_iso_free_all(s); 1167 1168 if (iface >= USB_MAX_INTERFACES) { 1169 p->status = USB_RET_STALL; 1170 return; 1171 } 1172 1173 rc = libusb_set_interface_alt_setting(s->dh, iface, alt); 1174 if (rc != 0) { 1175 usb_host_libusb_error("libusb_set_interface_alt_setting", rc); 1176 p->status = USB_RET_STALL; 1177 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1178 usb_host_nodev(s); 1179 } 1180 return; 1181 } 1182 1183 udev->altsetting[iface] = alt; 1184 usb_host_ep_update(s); 1185 } 1186 1187 static void usb_host_handle_control(USBDevice *udev, USBPacket *p, 1188 int request, int value, int index, 1189 int length, uint8_t *data) 1190 { 1191 USBHostDevice *s = USB_HOST_DEVICE(udev); 1192 USBHostRequest *r; 1193 int rc; 1194 1195 trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index); 1196 1197 if (s->dh == NULL) { 1198 p->status = USB_RET_NODEV; 1199 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1200 return; 1201 } 1202 1203 switch (request) { 1204 case DeviceOutRequest | USB_REQ_SET_ADDRESS: 1205 usb_host_set_address(s, value); 1206 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1207 return; 1208 1209 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: 1210 usb_host_set_config(s, value & 0xff, p); 1211 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1212 return; 1213 1214 case InterfaceOutRequest | USB_REQ_SET_INTERFACE: 1215 usb_host_set_interface(s, index, value, p); 1216 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1217 return; 1218 1219 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE: 1220 if (value == 0) { /* clear halt */ 1221 int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT; 1222 libusb_clear_halt(s->dh, index); 1223 usb_ep_set_halted(udev, pid, index & 0x0f, 0); 1224 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1225 return; 1226 } 1227 } 1228 1229 r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8); 1230 r->cbuf = data; 1231 r->clen = length; 1232 memcpy(r->buffer, udev->setup_buf, 8); 1233 if (!r->in) { 1234 memcpy(r->buffer + 8, r->cbuf, r->clen); 1235 } 1236 1237 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices 1238 * to work redirected to a not superspeed capable hcd */ 1239 if (udev->speed == USB_SPEED_SUPER && 1240 !(udev->port->speedmask & USB_SPEED_MASK_SUPER) && 1241 request == 0x8006 && value == 0x100 && index == 0) { 1242 r->usb3ep0quirk = true; 1243 } 1244 1245 libusb_fill_control_transfer(r->xfer, s->dh, r->buffer, 1246 usb_host_req_complete_ctrl, r, 1247 CONTROL_TIMEOUT); 1248 rc = libusb_submit_transfer(r->xfer); 1249 if (rc != 0) { 1250 p->status = USB_RET_NODEV; 1251 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1252 p->status, p->actual_length); 1253 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1254 usb_host_nodev(s); 1255 } 1256 return; 1257 } 1258 1259 p->status = USB_RET_ASYNC; 1260 } 1261 1262 static void usb_host_handle_data(USBDevice *udev, USBPacket *p) 1263 { 1264 USBHostDevice *s = USB_HOST_DEVICE(udev); 1265 USBHostRequest *r; 1266 size_t size; 1267 int ep, rc; 1268 1269 if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) { 1270 p->status = USB_RET_ADD_TO_QUEUE; 1271 return; 1272 } 1273 1274 trace_usb_host_req_data(s->bus_num, s->addr, p, 1275 p->pid == USB_TOKEN_IN, 1276 p->ep->nr, p->iov.size); 1277 1278 if (s->dh == NULL) { 1279 p->status = USB_RET_NODEV; 1280 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1281 return; 1282 } 1283 if (p->ep->halted) { 1284 p->status = USB_RET_STALL; 1285 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1286 return; 1287 } 1288 1289 switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) { 1290 case USB_ENDPOINT_XFER_BULK: 1291 size = usb_packet_size(p); 1292 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size); 1293 if (!r->in) { 1294 usb_packet_copy(p, r->buffer, size); 1295 } 1296 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0); 1297 if (p->stream) { 1298 #ifdef HAVE_STREAMS 1299 libusb_fill_bulk_stream_transfer(r->xfer, s->dh, ep, p->stream, 1300 r->buffer, size, 1301 usb_host_req_complete_data, r, 1302 BULK_TIMEOUT); 1303 #else 1304 usb_host_req_free(r); 1305 p->status = USB_RET_STALL; 1306 return; 1307 #endif 1308 } else { 1309 libusb_fill_bulk_transfer(r->xfer, s->dh, ep, 1310 r->buffer, size, 1311 usb_host_req_complete_data, r, 1312 BULK_TIMEOUT); 1313 } 1314 break; 1315 case USB_ENDPOINT_XFER_INT: 1316 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size); 1317 if (!r->in) { 1318 usb_packet_copy(p, r->buffer, p->iov.size); 1319 } 1320 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0); 1321 libusb_fill_interrupt_transfer(r->xfer, s->dh, ep, 1322 r->buffer, p->iov.size, 1323 usb_host_req_complete_data, r, 1324 INTR_TIMEOUT); 1325 break; 1326 case USB_ENDPOINT_XFER_ISOC: 1327 if (p->pid == USB_TOKEN_IN) { 1328 usb_host_iso_data_in(s, p); 1329 } else { 1330 usb_host_iso_data_out(s, p); 1331 } 1332 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1333 p->status, p->actual_length); 1334 return; 1335 default: 1336 p->status = USB_RET_STALL; 1337 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1338 p->status, p->actual_length); 1339 return; 1340 } 1341 1342 rc = libusb_submit_transfer(r->xfer); 1343 if (rc != 0) { 1344 p->status = USB_RET_NODEV; 1345 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1346 p->status, p->actual_length); 1347 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1348 usb_host_nodev(s); 1349 } 1350 return; 1351 } 1352 1353 p->status = USB_RET_ASYNC; 1354 } 1355 1356 static void usb_host_flush_ep_queue(USBDevice *dev, USBEndpoint *ep) 1357 { 1358 if (usb_host_use_combining(ep)) { 1359 usb_ep_combine_input_packets(ep); 1360 } 1361 } 1362 1363 static void usb_host_handle_reset(USBDevice *udev) 1364 { 1365 USBHostDevice *s = USB_HOST_DEVICE(udev); 1366 int rc; 1367 1368 trace_usb_host_reset(s->bus_num, s->addr); 1369 1370 rc = libusb_reset_device(s->dh); 1371 if (rc != 0) { 1372 usb_host_nodev(s); 1373 } 1374 } 1375 1376 static int usb_host_alloc_streams(USBDevice *udev, USBEndpoint **eps, 1377 int nr_eps, int streams) 1378 { 1379 #ifdef HAVE_STREAMS 1380 USBHostDevice *s = USB_HOST_DEVICE(udev); 1381 unsigned char endpoints[30]; 1382 int i, rc; 1383 1384 for (i = 0; i < nr_eps; i++) { 1385 endpoints[i] = eps[i]->nr; 1386 if (eps[i]->pid == USB_TOKEN_IN) { 1387 endpoints[i] |= 0x80; 1388 } 1389 } 1390 rc = libusb_alloc_streams(s->dh, streams, endpoints, nr_eps); 1391 if (rc < 0) { 1392 usb_host_libusb_error("libusb_alloc_streams", rc); 1393 } else if (rc != streams) { 1394 error_report("libusb_alloc_streams: got less streams " 1395 "then requested %d < %d", rc, streams); 1396 } 1397 1398 return (rc == streams) ? 0 : -1; 1399 #else 1400 error_report("libusb_alloc_streams: error not implemented"); 1401 return -1; 1402 #endif 1403 } 1404 1405 static void usb_host_free_streams(USBDevice *udev, USBEndpoint **eps, 1406 int nr_eps) 1407 { 1408 #ifdef HAVE_STREAMS 1409 USBHostDevice *s = USB_HOST_DEVICE(udev); 1410 unsigned char endpoints[30]; 1411 int i; 1412 1413 for (i = 0; i < nr_eps; i++) { 1414 endpoints[i] = eps[i]->nr; 1415 if (eps[i]->pid == USB_TOKEN_IN) { 1416 endpoints[i] |= 0x80; 1417 } 1418 } 1419 libusb_free_streams(s->dh, endpoints, nr_eps); 1420 #endif 1421 } 1422 1423 /* 1424 * This is *NOT* about restoring state. We have absolutely no idea 1425 * what state the host device is in at the moment and whenever it is 1426 * still present in the first place. Attemping to contine where we 1427 * left off is impossible. 1428 * 1429 * What we are going to to to here is emulate a surprise removal of 1430 * the usb device passed through, then kick host scan so the device 1431 * will get re-attached (and re-initialized by the guest) in case it 1432 * is still present. 1433 * 1434 * As the device removal will change the state of other devices (usb 1435 * host controller, most likely interrupt controller too) we have to 1436 * wait with it until *all* vmstate is loaded. Thus post_load just 1437 * kicks a bottom half which then does the actual work. 1438 */ 1439 static void usb_host_post_load_bh(void *opaque) 1440 { 1441 USBHostDevice *dev = opaque; 1442 USBDevice *udev = USB_DEVICE(dev); 1443 1444 if (dev->dh != NULL) { 1445 usb_host_close(dev); 1446 } 1447 if (udev->attached) { 1448 usb_device_detach(udev); 1449 } 1450 usb_host_auto_check(NULL); 1451 } 1452 1453 static int usb_host_post_load(void *opaque, int version_id) 1454 { 1455 USBHostDevice *dev = opaque; 1456 1457 if (!dev->bh_postld) { 1458 dev->bh_postld = qemu_bh_new(usb_host_post_load_bh, dev); 1459 } 1460 qemu_bh_schedule(dev->bh_postld); 1461 return 0; 1462 } 1463 1464 static const VMStateDescription vmstate_usb_host = { 1465 .name = "usb-host", 1466 .version_id = 1, 1467 .minimum_version_id = 1, 1468 .post_load = usb_host_post_load, 1469 .fields = (VMStateField[]) { 1470 VMSTATE_USB_DEVICE(parent_obj, USBHostDevice), 1471 VMSTATE_END_OF_LIST() 1472 } 1473 }; 1474 1475 static Property usb_host_dev_properties[] = { 1476 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0), 1477 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0), 1478 DEFINE_PROP_STRING("hostport", USBHostDevice, match.port), 1479 DEFINE_PROP_UINT32("vendorid", USBHostDevice, match.vendor_id, 0), 1480 DEFINE_PROP_UINT32("productid", USBHostDevice, match.product_id, 0), 1481 DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4), 1482 DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32), 1483 DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel, 1484 LIBUSB_LOG_LEVEL_WARNING), 1485 DEFINE_PROP_BIT("pipeline", USBHostDevice, options, 1486 USB_HOST_OPT_PIPELINE, true), 1487 DEFINE_PROP_END_OF_LIST(), 1488 }; 1489 1490 static void usb_host_class_initfn(ObjectClass *klass, void *data) 1491 { 1492 DeviceClass *dc = DEVICE_CLASS(klass); 1493 USBDeviceClass *uc = USB_DEVICE_CLASS(klass); 1494 1495 uc->realize = usb_host_realize; 1496 uc->product_desc = "USB Host Device"; 1497 uc->cancel_packet = usb_host_cancel_packet; 1498 uc->handle_data = usb_host_handle_data; 1499 uc->handle_control = usb_host_handle_control; 1500 uc->handle_reset = usb_host_handle_reset; 1501 uc->handle_destroy = usb_host_handle_destroy; 1502 uc->flush_ep_queue = usb_host_flush_ep_queue; 1503 uc->alloc_streams = usb_host_alloc_streams; 1504 uc->free_streams = usb_host_free_streams; 1505 dc->vmsd = &vmstate_usb_host; 1506 dc->props = usb_host_dev_properties; 1507 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 1508 } 1509 1510 static TypeInfo usb_host_dev_info = { 1511 .name = TYPE_USB_HOST_DEVICE, 1512 .parent = TYPE_USB_DEVICE, 1513 .instance_size = sizeof(USBHostDevice), 1514 .class_init = usb_host_class_initfn, 1515 .instance_init = usb_host_instance_init, 1516 }; 1517 1518 static void usb_host_register_types(void) 1519 { 1520 type_register_static(&usb_host_dev_info); 1521 } 1522 1523 type_init(usb_host_register_types) 1524 1525 /* ------------------------------------------------------------------------ */ 1526 1527 static QEMUTimer *usb_auto_timer; 1528 static VMChangeStateEntry *usb_vmstate; 1529 1530 static void usb_host_vm_state(void *unused, int running, RunState state) 1531 { 1532 if (running) { 1533 usb_host_auto_check(unused); 1534 } 1535 } 1536 1537 static void usb_host_auto_check(void *unused) 1538 { 1539 struct USBHostDevice *s; 1540 struct USBAutoFilter *f; 1541 libusb_device **devs = NULL; 1542 struct libusb_device_descriptor ddesc; 1543 int unconnected = 0; 1544 int i, n; 1545 1546 if (usb_host_init() != 0) { 1547 return; 1548 } 1549 1550 if (runstate_is_running()) { 1551 n = libusb_get_device_list(ctx, &devs); 1552 for (i = 0; i < n; i++) { 1553 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) { 1554 continue; 1555 } 1556 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) { 1557 continue; 1558 } 1559 QTAILQ_FOREACH(s, &hostdevs, next) { 1560 f = &s->match; 1561 if (f->bus_num > 0 && 1562 f->bus_num != libusb_get_bus_number(devs[i])) { 1563 continue; 1564 } 1565 if (f->addr > 0 && 1566 f->addr != libusb_get_device_address(devs[i])) { 1567 continue; 1568 } 1569 if (f->port != NULL) { 1570 char port[16] = "-"; 1571 usb_host_get_port(devs[i], port, sizeof(port)); 1572 if (strcmp(f->port, port) != 0) { 1573 continue; 1574 } 1575 } 1576 if (f->vendor_id > 0 && 1577 f->vendor_id != ddesc.idVendor) { 1578 continue; 1579 } 1580 if (f->product_id > 0 && 1581 f->product_id != ddesc.idProduct) { 1582 continue; 1583 } 1584 1585 /* We got a match */ 1586 s->seen++; 1587 if (s->errcount >= 3) { 1588 continue; 1589 } 1590 if (s->dh != NULL) { 1591 continue; 1592 } 1593 if (usb_host_open(s, devs[i]) < 0) { 1594 s->errcount++; 1595 continue; 1596 } 1597 break; 1598 } 1599 } 1600 libusb_free_device_list(devs, 1); 1601 1602 QTAILQ_FOREACH(s, &hostdevs, next) { 1603 if (s->dh == NULL) { 1604 unconnected++; 1605 } 1606 if (s->seen == 0) { 1607 if (s->dh) { 1608 usb_host_close(s); 1609 } 1610 s->errcount = 0; 1611 } 1612 s->seen = 0; 1613 } 1614 1615 #if 0 1616 if (unconnected == 0) { 1617 /* nothing to watch */ 1618 if (usb_auto_timer) { 1619 timer_del(usb_auto_timer); 1620 trace_usb_host_auto_scan_disabled(); 1621 } 1622 return; 1623 } 1624 #endif 1625 } 1626 1627 if (!usb_vmstate) { 1628 usb_vmstate = qemu_add_vm_change_state_handler(usb_host_vm_state, NULL); 1629 } 1630 if (!usb_auto_timer) { 1631 usb_auto_timer = timer_new_ms(QEMU_CLOCK_REALTIME, usb_host_auto_check, NULL); 1632 if (!usb_auto_timer) { 1633 return; 1634 } 1635 trace_usb_host_auto_scan_enabled(); 1636 } 1637 timer_mod(usb_auto_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 2000); 1638 } 1639 1640 void usb_host_info(Monitor *mon, const QDict *qdict) 1641 { 1642 libusb_device **devs = NULL; 1643 struct libusb_device_descriptor ddesc; 1644 char port[16]; 1645 int i, n; 1646 1647 if (usb_host_init() != 0) { 1648 return; 1649 } 1650 1651 n = libusb_get_device_list(ctx, &devs); 1652 for (i = 0; i < n; i++) { 1653 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) { 1654 continue; 1655 } 1656 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) { 1657 continue; 1658 } 1659 usb_host_get_port(devs[i], port, sizeof(port)); 1660 monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n", 1661 libusb_get_bus_number(devs[i]), 1662 libusb_get_device_address(devs[i]), 1663 port, 1664 speed_name[libusb_get_device_speed(devs[i])]); 1665 monitor_printf(mon, " Class %02x:", ddesc.bDeviceClass); 1666 monitor_printf(mon, " USB device %04x:%04x", 1667 ddesc.idVendor, ddesc.idProduct); 1668 if (ddesc.iProduct) { 1669 libusb_device_handle *handle; 1670 if (libusb_open(devs[i], &handle) == 0) { 1671 unsigned char name[64] = ""; 1672 libusb_get_string_descriptor_ascii(handle, 1673 ddesc.iProduct, 1674 name, sizeof(name)); 1675 libusb_close(handle); 1676 monitor_printf(mon, ", %s", name); 1677 } 1678 } 1679 monitor_printf(mon, "\n"); 1680 } 1681 libusb_free_device_list(devs, 1); 1682 } 1683